Patents by Inventor Karl Schäfer

Karl Schäfer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5274899
    Abstract: A method and apparatus for setting the knife projection of regrindable, strip-shaped cutting tools which are each screwed releasably to a knife carrier (8) and which are releasably arranged together with the carrier, in an at least approximately radial direction, in the rotary-drivable disk (1) of a disk-type cutter.
    Type: Grant
    Filed: February 12, 1993
    Date of Patent: January 4, 1994
    Assignee: Dimetal S.A.
    Inventors: Dominique Sentagnes, Rony Callens, Karl Schaefer
  • Patent number: 5074945
    Abstract: The invention relates to a process and to a device for producing a coherent web from long slivers which are produced by breaking-up the raw material fed and are then compacted to give a web which is subsequently glued and then pressed together with other webs to give blocks or the like. The raw material used is sticks or slabs which are split parallel to the fibers by vertically oscillating cutting motions, to give long slivers which are then compacted by ramming to give a web.
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: December 24, 1991
    Assignee: Inter-Wood-Maschinen G.m.b.H. & Co. KG
    Inventors: Gerd Schaefer, Karl Schaefer
  • Patent number: 4660777
    Abstract: Method for the manufacture of flakes from chips and apparatus for carrying out the method. The worn, in use, blade portions of a strip-steel knife are exchanged continuously or periodically with sharp strip-steel knives during the flake manufacturing operation. The feed of the strip-steel knives is preferably time-dependent and/or dependent on the energy consumption of the apparatus. Disposed longitudinally of the knife-ring are one or several magazines for supplying or/and receiving the strip-steel knives.
    Type: Grant
    Filed: March 15, 1984
    Date of Patent: April 28, 1987
    Assignee: Inter-wood Maschinen GmbH & Co. KG
    Inventors: Karl Schaefer, Heinz Stein
  • Patent number: 4593862
    Abstract: Method and apparatus for the manufacture of chips from mineral, vegetable or embrittled materials. In the method the stationary wear plates and striking plates when worn from use are replaced during ball mill operation either continuously or periodically, either with or without pressure plates for the striking bars, and with different feeding speeds. The advance, or feeding, of these plates occurs in a time-dependent and/or energy consumption dependent manner. The apparatus includes a conventional beater mill equipped with a vertical or horizontal rotating beater wheel which has arranged on one or both sides of the stationary crushing path several magazines for storing wear plates and striking bars. The replacement of the wear plates and the striking bars is done by suitably constructed slide members.
    Type: Grant
    Filed: November 20, 1984
    Date of Patent: June 10, 1986
    Assignee: Inter-Wood Maschinen GmbH & Co.
    Inventors: Karl Schaefer, Gottfried Frank-Fahle, Norbert Gasenzer
  • Patent number: 3944155
    Abstract: One piece ribbon spool molded from suitable plastic, with no fastening hardware with spool or on ribbon required, comprising spaced circular side guide flanges, a central cylindrical hub joined by radial ribs with ribbon-receiving segmental cylindrical wall, a female ribbon latch forming a hook for receiving free end of a male ribbon latch to anchor end of ribbon therebetween, other end of male latch forming unitary hinge connection, and outer surfaces of latches when in ribbon-anchoring position describing extension of cylindrical surface of segmental ribbon-receiving wall, the male latch being narrower than the space separating the side flanges, and apertures in the latter opposite the latches to facilitate engagement and disengagement of the ribbon and the spool.
    Type: Grant
    Filed: April 22, 1974
    Date of Patent: March 16, 1976
    Assignee: Victor Comptometer Corporation
    Inventors: Robert Hugh Wilczewski, Rudolf Karl Schaefer